Electric cartridge-fuse.



G. 'W. FRAZIBR.

ELECTRIC CARTRIDGE FUSE.

APPLICATION FILED DEO.23,1912.

1 7 4 Patented July 15, 1913.

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Specification of Letters latent.

GEORGE FR-AZIER, OF PORTLAND. OREGDN;

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Application filed December 23, 3912. Serial No. 738,324.

To all whom it may concern:

Be it known thatl, GEORGE W. FRAZIER, a citlzen of the United Stat-es, residlng at Portland, in the county of Multnomah and. State of Oregon, have invented certain new and useful ln'iproveinents in Electric Cartridge-Fuses, of which the following" is a specification, reference being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in electric fuses, and has for its primary object to provide an electric cartridge fuse which will be of simplcconstruction and highly ellicient in use.

iinotlfer object is to provide a device of this character having a sectional tapered plug at each end with a correspondii'igly tapered sleeve to recc' the same, and a cap to inclose the plug and sleeve in the end of the cartridge tube.

ll it'h tl E above and other objects in view, as shall become more apparent as the de scription proceeds, the invention consists in certain constructions. combinations, and arrangements of parts as I shall hereii'iafter fully describe and claim.

For av full understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a plan view of the complete device. Fig. 2 is alongltudinal section therelhrough. Fig. is an enlarged cross sectional view on the line 3 3, looking in the direction indicated by the arrow. Fig. 4 is a. detail perspective view of the sleeve forming a seat for the ring.

leferring; more particularly to the drawings. in which similar reference characters lesignate corresponding parts throughout the several views, the numeral 1 indicates the tubular body which is preferably formed of fiber and has positioned in either end the sleeve 9, having a. tapered central bore 3 and a. circumferential flange -fl.. The flange 4 engages against the end of the tube 1, thus limiting the inward movementof the sleeve. T he sleeve 2 is also provided with a concave inner end for engagement against the filling 6, said filling being preferably chalk, although any suitable filling 'may be employed. The sleeves 2 may also be formed of any suitable non-conducting material wood. The fuse wire 7 extends through the filling it and has its opposite ends secured to the plugs 8. Each plug 8 l of the filling- 6.

- formed in halves 9, as clearly shown in Fig. 3, each half having a semicircular groove extending its full length and in its tlat side 'to receive the end of the fuse wire 7, as shown'at 10. The semi-circular grooves are of such size that when the wire 7 is positioned therein, the halves 0 are spaced from one another, thus causing them to grip the wire and securely hold the same. understood that. the outer faces of the halves 9 are tapered to correspond with the tapered central bore 3 of the sleeves 2, and when in, position, the flattened outer ends of the plugs project for a short distance beyond the outer ends of the sleeves 2. v

The caps 11 are position-ed over the ends of the-body 1., iuclosing the outer ends of the sleeves 2 and plugs 8. The caps 11 are preferably constructed of pressed brass or other suitable metal and are held ,in place upon the ends of the body 1 by means of screws 12 extending through the sides of the body 1 near the opposite ends thereof and into the sleeves 2, the heads 13 of the screws pressing against the outer faces of the caps 11. The caps 11 are slotted fora short distance from their edges, as shown at l h'to receive the shanks of the screws 12, as the caps slide into position, it being run It will be derstood that the screws are loosened and again tightened aftcr the caps are in place.

Should the fuse wire 7 burn out, it may be readily replaced by first removing the caps, then the plugs, and emptying the body After the new fuse wire 7 is in position and one of the plugs S forced in place, the filling may then be restored to its position in the body 1, or a second plug forced in place and the caps 11 secured in position. To remove or replace the caps 11., it is simply necessary to loosen the screws 12.

Owing to the construction of this electric cartridge fuse, it will be highly efficient in use and should any of the parts become worn or damaged, they maybe readily and cheaply replaced.

What I 'claimisk- 1. A device of the class described comprising a body member, a filling in said mem her, a sleeve in the end of said member and having a tapering bore, a fuse wire projecting through-the filling, means within the tapering bore sleeve for holding the end of the fuse wire, said fuse wire holding means being tapered to correspond with the bore and having Wedging engagement therein,

means for retaining the sleeve in position, and a cap covering the sleere and engaged against the Wire fuse holding member and retained in position by the sleeve holding means.

2. A cartridge fuse comprising a body member. a filling in said member, a fuse a body member, a fuse wire extending through the body member, a filling Within 1 the body member and around the fuse wire. SCt'10nal plugs for holding the opposite ends wire extending through the filling, a sleeve 1 in either end of the body member and having a tapered central bore. sleeve holding means carried b3" the body member, tapered plugs for holding the ends of the fuse wire. said plugs being engaged in the central bores of the sleeves, and caps engaged over the ends of the body member and against the outer ends of the plugs and retained in position by the sleeve holding means.

An electric cartridge fuse comprising of the fuse wire. means within the opposite ends of the body member for forming seats for the plugs, caps eng a ed over the ends of the body member and against the plugs to retain the latter in position, and means for securing the caps and plug seats in position.

In testimony whereof Ihereunto afix my signature in the presence of two witnesses.

GEORGE W. FRAZIER.

Witnesses:

H. H. NEWHALL, F. W. ALT, Jr.

Copies of this patent, may be obtained for five cents each, by addressing the Commissioner 0t Patents, Washington, D. C. 

